<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
          <i class="el-icon-download"/>
          <a :href="'/static/01.xlsx'">点击下载模版</a>
        </el-tag>

      </el-form-item>

      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API+'/eduservice/edusubject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel">
          <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
          <el-button
            :loading="loading"
            style="margin-left: 10px;"
            size="small"
            type="success"
            @click="submitUpload">上传到服务器</el-button>
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>
<script >
  export default {
    data(){
      return {
        BASE_API: process.env.BASE_API, // 接口API地址
        importBtnDisabled: false, // 按钮是否禁用,
        loading: false
      }
    },
    created() {
    },
    methods:{
      //上传
      submitUpload(){
        //点击按钮上传文件到接口里面
          this.importBtnDisabled = true
          this.loading = true
          // js原生写法: document.getElementById("upload").submit()
          this.$refs.upload.submit()
      },
      fileUploadSuccess(){
        this.loding=false,
          this.$message({
            type:'success',
            message:'上传成功'
          })
        this.$router.push({path:'/subject/list'})
      },
      //上传失败
      //上传成功

      fileUploadError(){
        this.loding=false,
          this.$message({
            type:'error',
            message:'上传失败'

          })


      }
    }
  }
</script>
